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  1. #include <stdio.h>
  2. #include <math.h>
  3.  
  4. typedef struct{
  5.     int id;
  6.     double height;
  7.     double weight;
  8. }Body;
  9.  
  10. int main(void){
  11.     int i=0; 
  12.     double ave=0, std=0,a,b,c;
  13.  
  14.     Body data[]={
  15.         {1,165,60},
  16.         {2,170,68},
  17.         {3,160,50},
  18.         {4,180,75},
  19.         {5,175,80},
  20.     };
  21.     Body temp;
  22.     do{
  23.         if(data[i+1].height-data[i].height>0){
  24.             i=i+1;
  25.         }
  26.         else{
  27.             temp=data[i];
  28.             data[i]=data[i+1];
  29.             data[i+1]=temp;
  30.             i=0;
  31.         }
  32.     }while(i!=4);
  33.  
  34.     for(i=0;i<5;i++){
  35.         printf("id %d,height %.0f,weight %.0f \n", data[i].id, data[i].height, data[i].weight);
  36.     }
  37.  
  38.     ave=(data[4].height+data[3].height+data[2].height)/3;
  39.     a=data[4].height-ave;
  40.     b=data[3].height-ave;
  41.     c=data[2].height-ave;
  42.     std=(a*a+b*b+c*c)/3;
  43.     std=sqrt(std);
  44.  
  45.     printf("ave=%.1f\n", ave);
  46.     printf("std=%.1f\n", std);
  47.  
  48.     return 0;
  49. }
Success #stdin #stdout 0s 5316KB
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stdin
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Standard input is empty
stdout
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id 3,height 160,weight 50 
id 1,height 165,weight 60 
id 2,height 170,weight 68 
id 5,height 175,weight 80 
id 4,height 180,weight 75 
ave=175.0
std=4.1
https://ideone.com/y16ksG
language:
C99 (gcc 8.3)
created:
4 days ago
visibility:
public

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